Bat, Swarm

Source: System Reference Document 5.0
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Bat, Swarm

Medium beast, unaligned

Armor Class 12

Hit Points 22 (5d8+25)

Speed 0 ft., fly 30 ft.

5 (-3) 15 (+2) 10 (+0) 2 (-4) 12 (+1) 4 (-3)

Damage Resistances bludgeoning, piercing, and slashing

Condition Immunities charmed, frightened, grappled, paralyzed, petrified, prone, restrained, and stunned

Senses blindsight 60 ft., passive Perception 10

Challenge (50 XP)

Echolocation. The swarm can’t use its blindsight while deafened.

Keen Hearing. The swarm has advantage on Wisdom (Perception) checks that rely on hearing.

Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a size Tiny bat. The swarm can’t regain hit points or gain temporary hit points.


Bites. Melee Weapon Attack: +4 to hit, reach 0 ft., one creature in the swarm’s space. Hit: 5 (2d4) piercing damage, or 2 (1d4) piercing damage if the swarm has half of its hit points or fewer.

Source: Pathfinder Roleplaying Game Bestiary.

Bat swarms dwell in large caves, ruins, or even city sewers—anywhere they can find darkness to hide in during the day and a supply of food to feast upon at night. They are only encountered outside in a group at dawn or dusk, or when they have been startled and forced to flee their lairs.